Supporting this theory is the documentation, which shows that the name could be applied to a smartphone or even a smartphone operating system. In certain regions, the Galaxy S8 is rumored to be powered by the new Snapdragon 835 chipset. Other markets will use the next-generation Exynos chip. Both will be manufactured using the 10nm process, allowing either chip to bring the power without consuming excessive amounts of energy. We also could see 8GB of RAM inside, giving the device smooth multi-tasking capabilities.
One thing for sure, if Samsung does include some sort of overdriving Beast mode on the Galaxy S8, we're sure to hear about it in Samsung's marketing of the device.
So now there could be two reasons to look forward to April; it will be the start of the 2017 Major League Baseball season, and it could be the month that sees Samsung introduce its new flagship handset.
Samsung applies for an EC trademark on the phrase Beast mode
via GalaxyClub.nl (translated)